Worked on the ossrs/ffmpeg-webrtc repository to enhance video stream reliability by refining the dropped-packet recovery logic in FFmpeg’s avformat/fifo module. Addressed a bug where recovery was incorrectly triggered by any keyframe, including those from audio streams, by implementing a gating mechanism that restricts recovery to video keyframes only. This adjustment improved synchronization during packet loss scenarios, reducing false recovery events and ensuring smoother video playback. The solution was developed using C and leveraged expertise in audio processing, video processing, and multimedia frameworks. The work focused on low-level programming to deliver targeted stability improvements without introducing new features.